Lenz, Kai-Frederik; Gebhardt, Catalina; Couette, Pierre-Olivier; Schneider, Ralph R; Gross, Felix (2024): Multibeam bathymetry processed data (Kongsberg EM 122 dataset compilation) RV MARIA S. MERIAN during cruise MSM84 & MSM45, Labrador Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.964710
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Abstract:
Bathymetry from multibeam echo sounding data from three glacial cross-shelf troughs of the Labrador Shelf, namely the Okak, Makkovik and Cartwright troughs, are presented. The data were collected onboard the Maria S. Merian during cruises MSM45 and MSM84 using a Kongsberg EM122. The EM122 was operated in dual swath mode at 12 kHz frequency with a 1°×1° beam width. All raw multibeam data collected on MSM84 can be accessed here: (https://doi.org/10.1594/PANGAEA.916191). Data post-processing included manually error cleaning and depth correction using sound-velocity profiles with Fledermaus (MSM45) and Caris HIPS and SIPS (MSM84). The available datasets from both expeditions were merged and gridded with a cell size of 25 m using the Generic Mapping Tools (GMT) data processing and display software package (GMT version 6.1.1). Horizontal datum is WGS84. EPSG code is 4326. The objective of compiling the bathymetry data from the Labrador Shelf is to map glacial landforms and reconstruct the dynamics of the Laurentide Ice Sheet in detail.
Related to:
Lenz, K-L; Gross, Felix; Kolling, Henriette Marie; Lohrberg, Arne; Couette, Pierre-Olivier; Ohlendorf, Christian; Schneider, Ralph R; Krastel, Sebastian; Gebhardt, Catalina (accepted): Geomorphological analysis of grounding-zone wedges reveals glacial retreat processes on the Labrador Shelf. Marine Geology, https://doi.org/10.1016/j.margeo.2024.107249
Source:
Gebhardt, Catalina; Dreutter, Simon; Dorschel, Boris; Couette, Pierre-Olivier; Repenning, Katharina; Zindler, Robin (2020): Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV MARIA S. MERIAN during cruise MSM84. PANGAEA, https://doi.org/10.1594/PANGAEA.916191
Funding:
German Research Foundation (DFG), grant/award no. 447580143: Glacial dynamics of the Laurentide Ice Sheet along a terrestrial-to-marine transect in East Canada (labsCAUs)
Coverage:
Median Latitude: 51.068808 * Median Longitude: -53.397814 * South-bound Latitude: 44.858670 * West-bound Longitude: -55.968830 * North-bound Latitude: 63.944170 * East-bound Longitude: -52.380500
Date/Time Start: 2015-08-02T13:30:00 * Date/Time End: 2019-07-17T08:20:05
Event(s):
MSM45_0_Underway-1 * Latitude Start: 63.944170 * Longitude Start: -52.380500 * Latitude End: 44.858670 * Longitude End: -55.968830 * Date/Time Start: 2015-08-02T13:30:00 * Date/Time End: 2015-08-19T18:19:59 * Campaign: MSM45 * Basis: Maria S. Merian * Method/Device: EM122 multibeam echosounder (EM122) * Comment: Event shows start/end point (date/time & coordinates) of first/last data record using Kongsberg EM 122 multibeam echosounder during cruise MSM45 (datetime / position based on existing events MSM45_400-1 and MSM45_400-1
MSM45_442-1)
MSM45_442-1)
MSM84_0_Underway-3 * Latitude Start: 47.614662 * Longitude Start: -52.625387 * Latitude End: 47.857732 * Longitude End: -52.616541 * Date/Time Start: 2019-06-18T12:46:17 * Date/Time End: 2019-07-17T08:20:05 * Campaign: MSM84 (LABRADOR-GLACIALS) * Basis: Maria S. Merian * Method/Device: EM122 multibeam echosounder (EM122) * Comment: Event shows start/end point (date/time & coordinates) of first/last data record using Kongsberg EM 122 multibeam echosounder during cruise MSM84
Comment:
These data should not be used for navigational purposes.
Ship time for the cruise MSM84 was funded by the DFG under the award MerMet 17-49, Gebhardt, LABRADOR-GLACIALS.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Lenz, Kai-Frederik | |||
| 2 | Raster cell size | Raster cell size | Lenz, Kai-Frederik | Extracted from file | ||
| 3 | File content | Content | Lenz, Kai-Frederik | |||
| 4 | Horizontal datum | Horizontal datum | Lenz, Kai-Frederik | |||
| 5 | Horizontal datum, projection stored in file | Horizontal datum in file | Lenz, Kai-Frederik | Extracted from file | ||
| 6 | Vertical datum | Vertical datum | Lenz, Kai-Frederik | |||
| 7 | Longitude, westbound | Longitude west | Lenz, Kai-Frederik | Extracted from file | ||
| 8 | Longitude, eastbound | Longitude east | Lenz, Kai-Frederik | Extracted from file | ||
| 9 | Latitude, southbound | Latitude south | Lenz, Kai-Frederik | Extracted from file | ||
| 10 | Latitude, northbound | Latitude north | Lenz, Kai-Frederik | Extracted from file | ||
| 11 | Number of depth soundings | Soundings | # | Lenz, Kai-Frederik | ||
| 12 | Area | Area | km2 | Lenz, Kai-Frederik | ||
| 13 | Elevation, minimum | Elev min | m a.s.l. | Lenz, Kai-Frederik | Extracted from file | |
| 14 | Elevation, maximum | Elev max | m a.s.l. | Lenz, Kai-Frederik | Extracted from file |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
42 data points
Data
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| 1 Binary | 2 Raster cell size | 3 Content | 4 Horizontal datum | 5 Horizontal datum in file | 6 Vertical datum | 7 Longitude west | 8 Longitude east | 9 Latitude south | 10 Latitude north | 11 Soundings [#] | 12 Area [km2] | 13 Elev min [m a.s.l.] | 14 Elev max [m a.s.l.] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bathymetry_Makkovik_Trough.grd | 0.000225deg | bathymetry raster / negative values in meters for depth measurements (= elevation) | EPSG:4326 | None | mean sea level (MSL) | -57.60 | -57.0 | 54.94 | 55.46 | 646796 | 232 | -467 | -95 |
| Bathymetry_Okak_Trough.grd | 0.000225deg | bathymetry raster / negative values in meters for depth measurements (= elevation) | EPSG:4326 | None | mean sea level (MSL) | -60.78 | -60.4 | 58.01 | 58.34 | 338372 | 112 | -256 | -147 |
| Bathymetry_Cartwright_Trough.grd | 0.000225deg | bathymetry raster / negative values in meters for depth measurements (= elevation) | EPSG:4326 | None | mean sea level (MSL) | -56.30 | -55.3 | 54.10 | 55.00 | 3599327 | 1312 | -607 | -135 |